天てん球きゅう儀ぎ

noun

celestial globe; armillary sphere

A model of the celestial sphere, used historically for teaching astronomy. The two English terms refer to slightly different instruments: a celestial globe is a sphere showing stars and constellations, while an armillary sphere is a skeletal framework of rings representing celestial circles. In Japanese, 天球儀 can cover both.

• 博はく物ぶつ館かんで江え戸ど時じ代だいの天てん球きゅう儀ぎを見みた。

  I saw an Edo-period celestial globe at the museum.

• 天てん球きゅう儀ぎは、かつて天てん文もん学がくの教きょう育いくに使つかわれた。

  Celestial globes were once used in astronomy education.